leo10.cse.kyutech.ac.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:48:26:38:95:d5:ab:92:77:72:a4:b0:d3:9b:b1:e9:eb:68 was issued on by Let's Encrypt.

With 3 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=leo10.cse.kyutech.ac.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:48:26:38:95:d5:ab:92:77:72:a4:b0:d3:9b:b1:e9:eb:68
Serial Number (int): 373000278616820189272938830443054245735272
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3f:41:04:9c:ba:ef:15:dc:d7:b4:b5:5a:ff:0e:9b:ef:86:17:4c:4c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 25:0d:18:12:7f:32:0f:2e:73:dc:62:9a:e8:24:c2:99:b8:42:6e:04
Fingerprint (sha256): 18:5a:cd:a2:ff:0b:94:ec:99:91:0e:0e:8b:1d:d9:fc:b6:30:e8:bc:3c:89:d1:67:cb:2b:22:f5:a6:3f:ba:83

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate leo10.cse.kyutech.ac.jp

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for leo10.cse.kyutech.ac.jp

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

leo10.cse.kyutech.ac.jp
leo11.cse.kyutech.ac.jp
leo50.cse.kyutech.ac.jp

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Certificate

The complete raw certificate details for leo10.cse.kyutech.ac.jp in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoNZ+Ee8MjoOiO3670e20
YYqKOS31WrRaCxYLy7bYdD9OnlMyvs4GSJ9qGQaUwGjGiEwAE0BRGLcBsuNts1AZ
VYcOpnH7AYTlhU+UEzepiZZNAxQHFIUS29XdM8iNxXCA3jkr5N+y1evDUvoXCUZr
uF6GPbRbVLYuADi+DnBqP6CMRyzPyvFmC+SA/4kfQTiGBHkVl51pYl0pu0uQIKiN
Rj9XQN384sstei7QxTFzi0czC/D9HLZ6hUHP3ONtAeOn7gKxKg3ofIg86pAMOcvF
BN/57SRV0dmVPOQpPOg24p50SnNcVW3SFJbZo9pSHdMtqbAgL3jGlhybrrpfpoDv
GwIDAQAB
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 373000278616820189272938830443054245735272
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-21 08:52:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-21 08:52:15 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'leo10.cse.kyutech.ac.jp'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20303898969269779892600521512225509436057567077834429009576354081863519894346769055799012071145462260578605166035408232605737548288367929561284588937110826694233946673345541295866872788396441391505973707237463030210770068349214441070381590531308321222182332696180835125142223285824171404120256692874795483001689871534997634121315679006362613806551526841589990174592731370966767693072025507319606417183807224583541979049902508338080700959469164984830053618321998498102002651091309598076120953046872423627678242022799020770536660776055805245248691335144438976548818274792369998269481505114010517011475358215003319627547
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							3f41049cbaef15dcd7b4b55aff0e9bef86174c4c
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (77 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leo10.cse.kyutech.ac.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leo11.cse.kyutech.ac.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leo50.cse.kyutech.ac.jp'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e00000170672978540000040300473045022100eb7fc171d3a37fbae7bbfd102f2cf53b776c3f9da2b99d6361fba82c3cdcc713022057a2b91ac72f3335fdce5863f588eab06984e059cbd62ca99c551d14a5d09c6f007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170672978540000040300463044022074390527d30b12dde6953689d51e5a87255906b42e3ed6e4c9f4c14f21f9833d022075bdd8de542844be7b6f7502517e1d8da2c7bca8d58fc8a006ae26654d3c31cb
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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